Ruthenium-Catalyzed Functionalization of Pyrroles and Indoles with Propargyl Alcohols
作者:Nora Thies、Cristian G. Hrib、Edgar Haak
DOI:10.1002/chem.201200188
日期:2012.5.14
Several ruthenium‐catalyzed atom‐economic transformations of propargylalcohols with pyrroles or indoles leading to alkylated, propargylated, or annulated heteroaromatics are reported. The mechanistically distinct reactions are catalyzed by a single ruthenium(0) complex containing a redox‐coupled dienone ligand. The mode of activation regarding the propargylalcohols determines the reaction pathway
Ruthenium-catalyzed addition of carboxylic acids or cyclic 1,3-dicarbonyl compounds to propargyl alcohols
作者:Stefanie Berger、Edgar Haak
DOI:10.1016/j.tetlet.2010.10.053
日期:2010.12
Monomeric ruthenium(0) complexes containing redox-coupled dienone ligands were found to catalyze the regio-selective addition of carboxylic acids or cyclic 1,3-dicarbonyl compounds to propargylalcohols.
In Situ Generation of 1-Propyne: A Useful Introduction of 1-Propyne on Unsaturated Halogenated Compounds through the Sonogashira Reaction
作者:Estelle Abraham、Jean Suffert
DOI:10.1055/s-2002-19769
日期:——
Reaction of (E/Z)-1-bromopropene with exactly 1.42 equivalents of nBuLi followed by addition of water produces in situ a THF solution of propyne. Addition of a vinylic or aromatic halogenated substrates, Pd(PPh3)2Cl2, CuI and an amine to this solution give high yield of the corresponding coupling product bearing a propyne moiety. This practical procedure avoids the use of expensive and inflammable propyne gas which need a special apparatus for bubbling it into the reaction flask.